From £86,200
Dear All, I’m a plumber and heating engineer, I have access to all other trades guys that are willing to work long hours and at the weekends ...
From £62,040
Need to find an Extension Builder near you for all your extension buildering work?
GP Property Services provides a local, trusted extension...
From £60,440
Waltham Cross, EN7
Herts Renovations is a trusted extension builder serving customers in EN7 and the surrounding area. Contact us to today to get a competitive quote ...
From £53,560
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £60,280
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £62,680
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £62,360
Need to find an Extension Builder near you for all your extension buildering work?
C.B.Buildings & Claims Limited T/A Concept Solutions 3 C...
From £56,920
Loft Guru is an established extension buildering business in EN7. We come highly recommended and provide competitive quotes for your work.
From £61,880
Roberts & Co is a family run business est.2009. We specialize in Kitchen extensions and Loft conversions, and cover Hertfordshire, Essex and Greate...
From £57,880
Trusted and professional extension builder in EN7. Experienced in all extension buildering work and keeping within budget and on quote. PM Heating ...

Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.

Underpin a building - £17,871

Two storey extension - £88,557

Build a timber frame extension - £26,371

Build a swimming pool - £81,371

Single storey extension - £62,424

Side return extension - £45,676

Install an RSJ - £2,571

Outbuilding - £10,371

Build a Mansard loft conversion - £52,371

Loft conversion - £37,230

Build a kitchen extension - £42,371

Hip to gable loft conversion - £42,371

Granny annexe - £87,371

Garden office - £10,371

Convert a Garage - £16,371

Garage - £18,871

Build a flat roof extension - £22,371

Build a dormer loft conversion - £42,371

Concrete foundations - £6,621

Convert a bungalow loft - £29,371

Convert a basement - £41,676